Saw-sharpening machine



Patented Apr. ll, I899.

W. R. MORRIS. SAW SHARP ENING MACHINE.

(Applcat 11 1 d Apr 7 1898) 4 Sheets-Sheet I.

(No Model.)

5144mm: l Vz'llz'am iii/Morris,

/ mmw x X n4: NORRIS PETERS 00.. PHDTO-LITN No. 622,964. Patented Apr.Ii, I899.

W. R. MORRIS.

SAW SHARPENING MACHINE.

- (Application filed. Apr. 7, 1898.) (No Model.) 4 sheats sheat 2.

' VVz'ZZz'am Billorrz's,

m: Nonms mns cc. PHOTO-LITNO.. WASHINGTON, ay 0.

No. 622,964. 7 Patented Apr. ll, I899. W. B. MORRIS.

SAW SHABPENING MACHINE.

(Applistion mad A r. 7, 1898.)

4 Sheets-Sheet 3.

(N0 Model.)

- um/Wm; 7/i/Zz'am fZMorrza, fi

AWN

m: NORRIQ PETERS on. wnovou'rhuu wAsmuam, n. c.

No. 622,964. Patented Apr. u, I899. w. R. monms.

SAW SHARPENING MACHINE.

(Application filed Apr. 7, 1898.)

(No Model.) 4 Sheets-Sheet 4.

N'ITED STATES PAT NT OFFICE.

WILLIAM R. MORRIS, OFIINE BLUFF, ARKANSAS.

SAW-SHARPENING MACHINE.

SPECIFICATION forming part of Letters Patent No. 622,964, dated April11, 1899. Application filed April 7, 1898; Serial No. 676,817. (Nomodel.)

To all whom it may concern:

Be it known that 1, WILLIAM R. MORRIS,

"a citizen of the United States, residing at Pine Bluff, in the countyof Jefferson and State of Arkansas, have invented certain new and usefulImprovements in Saw-Sharpening Machines; and I do declare the followingto be a full, clear, and exact descriptionof the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

The invention has relation to saw sharpenin g machines and isparticularly designed for sharpening cotton-gin saws.

Among the various obj ects'of the invention is to provide a simple andinexpensive machine of this character with numerous adjustments foraccomplishing the desired end.

WVith this object in view the invention consists in certain features ofconstruction and combinations of parts, which will be hereinafter fullydescribed and claimed.

In the accompanying drawings, Figure 1 is a perspective view of myimproved machine, showing it in the act of sharpening a cottongin saw.Fig. 2 is a top plan view. Fig. 3 is a side elevation. Fig. at is a rearend view; and Fig. 5 is a detail perspective view of the end of one ofthe file-bars, showing the manner of attaching the files thereto.

In said drawings, A denotes an upright frame consisting of the sill B,the outer vertical standard 0, and the inner'vertical standards D,connected at their upper ends by cross-bars F.

18 denotes a drive-shaft journaled in bearings secured to several of thestandards and provided with a drive-gear F.

G denotes a shaft journaled to boxes secured to the inner standards Dand provided with a fly-wheel H and a pinion I, in mesh with thedrive-gear F.

21 denotes bars having their inner ends secured to the outer standards0. These bars converge to a point 17 and then are formed with parallelarms 17 which are adapted to rest upon the arbor of the gin-saws andsupport the machine when in the actof sharpening the saws while they arein the gin-stand.

7 denotes a block arranged between the converging sides of the bars 21and pivoted an eccentric 12", secured to the shaft 18.

thereto by pivot-bolts 7. One surface of this block, as at 7 is abovethe other surface at 7 for a purpose hereinafter to appear. This blockhas an arm 15, that projects rearwardly and is provided with a slot 15,through which projects an adjusting-screw 15 swiveled in the sill B ofthe frame. 15 denotes jam-nuts upon said screw. When it is desired totilt the block, these jam-nuts are loosened and the slotted end of thearm 15 is raised or lowered,as desired, and the nuts are then screwedtight against the end of the bar 15 to hold it and the block to which itis attached in desired adjustment. 3 denotes boxes located upon saidsurfaces 7 -and 7 Each box is pivoted to the slotted plate 6, which isadjustably secured to the surfaces '7 and 7 of the block by bolts 6.Near the rear ends of the box and adjustably secured to the surfaces 7'and 7 of the block are stop-lugs 5 5, that limit the inward movement ofthe boxes. 2 denotes curved springs each having one end secured to theblock and having its other end bearing against the boxes. 2 denotes astud projecting up from the surfaces 7 and 7 of the block and providedwith a screw-threaded aperture to receive the set-screws 2, which areadapted to be adjusted for a purpose hereinafter to appear. Arrangedwithin these boxes are reciprocating file-bars 4:, having secured totheir outer ends files 4. These files are held to the bars 4 by a bolt 4and a notched nut 4 the notch in said nut engaging the angle of thefile-bar. These file-bars are alternately reciprocated by cranks 4:,secured on the shaft G and connected to the file-bars by links G.

13 denotes a bracket secured to the side bars 21 and projecting underthe block 7 and formed with a bearing-loop 13, provided with ahorizontal row of holes 18 12 denotes an eccentric-pitman strapped toThe lower end of this pitman is provided with a vertical row of holesand is adjustably connected to a lever 11 by bolts 11. This lever toothby tooth as it is being sharpened by the vable in said slots by means ofthe bolts 9.

These arms at their outer ends are forked and adapted to engage thearbor of the saw and hold the machine in proper relation thereto.

10 denotes an auxiliary supporting forked arm which is also secured tothe bar 8, and 19 denotes a flat spring secured to the under side of theblock 7 and bearing down upon the upper edge of the free end of thelever 11. This spring serves to prevent the lever being thrown too farforward and takes up lost motion in the parts. v

From the foregoing description, taken in connection with theaccompanying drawings, the construction of the machine will be readilyunderstood without requiring a further explanation.

By meansof the holes in the lower end of the eccentric-pitman 12 andthose in the loop 13 of the bracket 13 the feed can be regulated to suitsaws having long or short teeth. The lugs 9 are made adjustable, so asto adapt the machine to large or small saws.

When it is desired-to out long teeth, the boxes 3 are moved inward byadjusting the stops 5 and bolts 6. The springs 2 are then adjusted bymeans of their set-screws to permit of the desired yielding movement ofthe boxes. To cut short teeth, the boxes are moved outward and thesprings correspondingly adjusted.

The inclination of the file-bars 4 gives the proper pressure to thefiles as they make their strokes on the saw and causes the boxes 3 tooscillate against the springs 2. The set-screw and springsregulate thepressure of the files against the saw.

By pivoting the block 7 to the bars 21 and roviding suitable ad ustmentfor tilting the block I am enabled to secure the proper angle for thefiles to regulate them to the sawteeth. This may be done by raising orlowering the arm 15.

Although I have specifically described the construction and relativearrangement of the several elements of my invention, I do not desire tobe confined to' the same, as such changes or modifications may be madeas clearly fall within the scope of myinvention Without departing fromthe spirit thereof.

Having thus described my invention,what

I claim, and desire to secure by Letters Patent, is-

In a machine of the character described, the combination with the mainframe provided with bars projecting outwardly therefrom, a block pivotedbetween said bars, plates 6 ad j ustably secured to the block, boxespivoted to the plates, springs engaging said boxes, means for adjustingthe tension of said springs, stop-plates 5 secured to said block andengaging said boxes at the rear of their pivotal connection with theblock, reciprocating file-bars mounted in said boxes, files secured totheir outer ends and crossing one another, mechanism for feeding the sawto be operated upon, and mechanism for reciprocating the file-bars,substantially as set forth.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

WILLIAM R. MORRIS.

Witnesses:

WILLIAM P. BORUFF, T. W. SPARKS.

